# SUBSTRATE-PRIME: Technical Documentation
## A Scientific Record of Discovery, Implementation, and Validation
**Document Version:** 1.0
**Date:** February 4, 2026
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**Validation:** 63 Z-gates across 542 positions = sampling ratio of 0.116 (11.6%)
### 2.3 BEAM System Analysis (10-base)
**Character Frequency Distribution:**
| Character | Count | Frequency | Assigned Value |
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**Purpose:** Guided mutation with constraint preservation
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#### 5.1.1 Constants Module
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Test: Import and validate constants
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Result: PASSED
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#### Observation 3: Safe Sites Decrease Predictably
**Data:**
```
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## Document Validation
**Reproducibility:**
- All code is in `substrate_prime/` directory
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*Document prepared: February 4, 2026*
*System state at documentation: Generation 207, 564 mutations*